Gear intermittent valve

Abstract

The utility model discloses a gear intermittent valve which is characterized in that a jacking gear is driven by a motor, and the jacking gear drives a valve rod to ascend and descend; a floating valve element is arranged on the valve rod and located at the liquid outlet, the floating valve element can be driven to be close to or away from the liquid outlet through lifting of the valve rod, opening and closing of the liquid outlet are achieved, and due to the arrangement of the guide assembly, it is guaranteed that the lifting paths of the valve rod are the same every time; the coating pipeline and the backflow pipeline are connected with the sealing joints respectively, and when the liquid outlet of the sealing joint connected with the coating pipeline is opened and the liquid outlet of the sealing joint connected with the backflow pipeline is sealed by the floating valve element, slurry enters from the input pipe and flows out from the coating pipeline. On the contrary, the slurry enters from the input pipe and flows out from the backflow pipeline, and therefore feeding on-off switching is achieved. And through driving of the motor, rotation of the jacking gear is converted into linear motion of the valve rod, it is guaranteed that opening and closing of the two liquid outlets can be rapidly switched, and the intermittent coating speed is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of coating, and particularly relates to a gear intermittent valve. Background Art

[0002] In the intermittent coating process, it is necessary to control the flow on and off of the slurry in the pipeline to ensure that there are blanks in two coating areas for processes such as slitting. With the increase of the coating speed and the reduction of the blank area, the commonly used intermittent valves in the market cannot meet the high-response switching, which limits the production efficiency of the intermittent coating process. Summary of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a gear intermittent valve, which can improve the intermittent coating speed.

[0004] The technical solution adopted by the utility model to solve its technical problems is: the utility model provides a gear intermittent valve, including an input pipe and two driving mechanisms for conveying the slurry to the two driving mechanisms, and the input pipe is connected to both of the two driving mechanisms; the driving mechanism includes

[0005] a driving component, which includes a motor and a coupling;

[0006] a gear box body, and the driving component is located on one side of the gear box body;

[0007] a transmission component, which is located inside the gear box body. The transmission component includes a jacking gear and a transmission shaft fixedly penetrating through the central hole of the jacking gear. The transmission shaft is horizontally arranged and connected to the rotating shaft of the motor through the coupling, and the transmission shaft is rotatably connected to the gear box body;

[0008] a valve stem, which is vertically arranged, and a vertical rack is fixedly arranged on the side wall of the valve stem, and the rack meshes with the jacking gear;

[0009] a guiding component, which is located inside the gear box body. The valve stem is connected between the jacking gear and the guiding component. The guiding component is used to guide the valve stem to move in the vertical direction to limit the rotation of the valve stem and keep it vertical;

[0010] a sealing joint, which is communicated with the input pipe. The sealing joint is provided with a liquid outlet, and a floating valve core is arranged on the valve stem. The floating valve core is located at the liquid outlet and is used to open or close the liquid outlet.

[0011] As a further improvement of the above technical solution, the guiding assembly includes a guiding mounting plate, a pin shaft and rolling elements. The guiding mounting plate is vertically arranged and is opposite to the valve stem. Two opposite connecting parts are arranged on one side of the guiding mounting plate facing the valve stem; the pin shaft is horizontally connected between the two connecting parts; the pin shaft passes through the rolling elements, and the rolling elements are rotatably connected to the pin shaft, and the rolling elements are in rolling connection with the valve stem.

[0012] As a further improvement of the above technical solution, the guiding assembly includes a guiding gear and a guiding shaft fixedly passing through the guiding gear. Both ends of the guiding shaft are rotatably connected to the gear box body, and the guiding shaft is arranged side by side with the transmission shaft;

[0013] There are two racks. The valve stem is located between the lifting gear and the guiding gear, and the two racks are respectively meshed with the lifting gear and the guiding gear.

[0014] As a further improvement of the above technical solution, the transmission assembly further includes a transmission gear. The transmission shaft passes through the transmission gear. The guiding assembly further includes a driven gear. The guiding shaft passes through the driven gear. The transmission gear is meshed with the driven gear.

[0015] As a further improvement of the above technical solution, a first linear bearing is fixedly connected to the lower part of the gear box body. The first linear bearing is sleeved on the lower end of the valve stem and is in sliding connection with the valve stem.

[0016] As a further improvement of the above technical solution, a second linear bearing is fixedly arranged on the sealing joint. The second linear bearing and the first linear bearing are arranged vertically. The second linear bearing is sleeved on the outer wall of the valve stem and is in sliding connection with the valve stem.

[0017] As a further improvement of the above technical solution, a connecting hole is further arranged on the sealing joint. The valve stem passes through the connecting hole. A sealing assembly is arranged at the position where the valve stem is close to the connecting hole. The sealing assembly includes a sealing screw, a sealing nut and two oil seals. The sealing screw is sleeved on the outer wall of the second linear bearing, and the head of the sealing screw abuts against the outer end of the connecting hole. The sealing nut is connected to the tail of the sealing screw. The two oil seals are respectively located at both ends of the second linear bearing, and the two oil seals are respectively in sealing connection with the head and the tail of the sealing screw.

[0018] As a further improvement of the above technical solution, a connecting ring and a columnar sealing plug are arranged inside the sealing joint. A sealing ring is arranged between the connecting ring and the sealing plug. A liquid outlet channel is arranged on the sealing plug. The liquid outlet channel penetrates through both ends of the sealing plug. The liquid outlet channel communicates with the hollow part of the connecting ring. The outer side port of the liquid outlet channel is the liquid outlet.

[0019] As a further improvement of the above technical solution, the floating valve core is conical, and its cross-sectional area gradually decreases along the direction from the outside to the inside of the liquid outlet channel.

[0020] As a further improvement of the above technical solution, the input pipe includes two first input pipes and a second input pipe. Both of the two first input pipes are connected to one of the sealing joints. One end of the second input pipe is connected to the other sealing joint. The other end of the second input pipe is connected to one of the first input pipes through a pipe body clamp.

[0021] The beneficial effects of the present utility model are as follows: The drive shaft is driven to rotate by a motor, and the lifting gear rotates accordingly. Since a vertical rack is fixedly arranged on the side wall of the valve stem, and the lifting gear meshes with the rack, the rotation of the lifting gear can drive the valve stem to lift and lower. A floating valve core is arranged on the valve stem. The floating valve core is located at the liquid outlet. The lifting and lowering of the valve stem can drive the floating valve core to approach or move away from the liquid outlet, realizing the opening and closing of the liquid outlet. And due to the arrangement of the guiding component, it is ensured that the lifting path of the valve stem is the same each time. The coating pipeline and the reflux pipeline are respectively connected to the sealing joint. When the liquid outlet of the sealing joint connected to the coating pipeline is opened, and the liquid outlet of the sealing joint connected to the reflux pipeline is sealed by the floating valve core, the slurry enters from the input pipe and enters the coating die head through the coating pipeline for coating. On the contrary, the slurry enters from the input pipe and flows out from the reflux pipeline, thereby realizing the switching of the supply on and off. Driven by the motor, the rotation of the lifting gear is converted into the linear motion of the valve stem. Under the condition of extremely small inertia, it is ensured that the opening and closing of the two liquid outlets can be quickly switched, improving the intermittent coating speed. Description of the Drawings

[0022] The present utility model will be further described below with reference to the drawings and embodiments.

[0023] Figure 1 is a schematic structural diagram of the gear intermittent valve provided by the first embodiment of the present utility model;

[0024] Figure 2 is a partial structural schematic diagram of the gear intermittent valve provided by the first embodiment of the present utility model;

[0025] Figure 3 is a schematic diagram of another angle of a partial structure of the gear intermittent valve provided by the first embodiment of the present utility model;

[0026] Figure 4 It is a schematic structural diagram of the guiding assembly of the gear intermittent valve provided by the first embodiment of the present utility model;

[0027] Figure 5 It is a cross-sectional view of the gear intermittent valve provided by the first embodiment of the present utility model;

[0028] Figure 6 It is a partial structural schematic diagram of the gear intermittent valve provided by the second embodiment of the present utility model.

[0029] Reference numerals: In Figures 1-5 it, 1, driving mechanism, 2, input pipe;

[0030] 11, driving assembly, 12, gear box body, 13, transmission assembly, 14, valve stem, 15, guiding assembly, 16, sealing joint, 21, first input pipe, 22, second input pipe, 23, pipe body clamp;

[0031] 111, motor, 112, coupling, 121, first linear bearing, 122, support seat, 131, lifting gear, 132, transmission shaft, 133, transmission bearing, 141, rack, 142, floating valve core, 151, guiding mounting plate, 152, pin shaft, 153, rolling body, 154, connecting portion, 161, liquid outlet, 162, second linear bearing, 163, connecting hole, 164, sealing assembly, 165, oil seal, 166, sealing screw, 167, sealing nut, 168, connecting ring, 169, sealing plug, 170, sealing ring, 171, liquid outlet channel, 172, cup body clamp;

[0032] In Figure 6 it, 3, guiding assembly, 31, guiding gear, 32, guiding shaft, 33, driven gear, 134, transmission gear. Detailed implementation manners

[0033] The concept, specific structure and technical effects of the present utility model will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present utility model. In addition, all the connection / linkage relationships involved in the patent do not simply refer to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. For example, fixed connection / fixed installation can be selected from screw connection, bolt connection, pin connection, key connection, bonding, mortise and tenon connection, welding, riveting and other methods as needed. For example, detachable connection can be selected from screw connection, bolt connection, threaded connection, snap connection, mortise and tenon connection, magic tape connection and other methods as needed. The various technical features in the creation of the present utility model can be interactively combined on the premise of not conflicting with each other.

[0034] Please refer to Figures 1-5, the first embodiment of the present utility model provides an intermittent gear valve, which includes an input pipe 2 and two driving mechanisms 1. The input pipe 2 is connected to both of the two driving mechanisms 1 and is used to convey slurry to the two driving mechanisms 1. The driving mechanism 1 includes a driving component 11, a gear box 12, a transmission component 13, a valve stem 14, a guiding component 15, and a sealing joint 16. The driving component 11 includes a motor 111 and a coupling 112. The driving component 11 is located on one side of the gear box 12. The transmission component 13 is located inside the gear box 12. The transmission component 13 includes a lifting gear 131 and a transmission shaft 132 fixedly passing through the central hole of the lifting gear 131. The transmission shaft 132 is horizontally arranged and is connected to the rotating shaft of the motor 111 through the coupling 112. The transmission shaft 132 is rotatably connected to the gear box 12. The valve stem 14 is vertically arranged, and a vertical rack 141 is fixedly arranged on the side wall of the valve stem 14. The rack 141 meshes with the lifting gear 131. The guiding component 15 is located inside the gear box 12. The valve stem 14 is connected between the lifting gear 131 and the guiding component 15. The guiding component 15 is used to guide the valve stem 14 to move in the vertical direction to limit the rotation of the valve stem 14 and keep it vertical. The sealing joint 16 is communicated with the input pipe 2. The sealing joint 16 is provided with a liquid outlet 161. A floating valve core 142 is arranged on the valve stem 14. The floating valve core 142 is located at the liquid outlet 161 and is used to open or close the liquid outlet 161. By driving the transmission shaft 132 to rotate through the motor 111, the lifting gear 131 rotates accordingly. Since the vertical rack 141 is fixedly arranged on the side wall of the valve stem 14 and the lifting gear 131 meshes with the rack 141, the rotation of the lifting gear 131 can drive the valve stem 14 to lift and lower. The floating valve core 142 is arranged on the valve stem 14. The floating valve core 142 is located at the liquid outlet 161. The lifting and lowering of the valve stem 14 can drive the floating valve core 142 to approach or move away from the liquid outlet 161, realizing the opening and closing of the liquid outlet 161. And due to the setting of the guiding component 15, it is ensured that the lifting and lowering path of the valve stem 14 is the same each time. Connect the coating pipeline and the reflux pipeline to the sealing joint 16 respectively. When the liquid outlet 161 of the sealing joint 16 connected to the coating pipeline is opened and the liquid outlet 161 of the sealing joint 16 connected to the reflux pipeline is sealed by the floating valve core 142, the slurry enters from the input pipe 2 and enters the coating die head through the coating pipeline for coating. On the contrary, the slurry enters from the input pipe 2 and flows out from the reflux pipeline, thus realizing the switching of the feeding on-off. Driven by the motor 111, the rotation of the lifting gear 131 is converted into the linear motion of the valve stem 14. Under the condition of extremely small inertia, it is ensured that the opening and closing of the two liquid outlets 161 can be quickly switched, improving the intermittent coating speed.

[0035] Please refer to Figure 3 and Figure 4, the guiding assembly 15 includes a guiding mounting plate 151, a pin shaft 152 and a rolling element 153. The guiding mounting plate 151 is vertically arranged and is opposite to the valve stem 14. Two opposite connecting parts 154 are arranged on one side of the guiding mounting plate 151 facing the valve stem 14; the pin shaft 152 is horizontally connected between the two connecting parts 154; the pin shaft 152 passes through the rolling element 153, and the rolling element 153 is rotatably connected to the pin shaft 152, and the rolling element 153 is in rolling connection with the valve stem 14. When the valve stem 14 moves up and down, the rolling element 153 rolls around the pin shaft 152 driven by the valve stem 14, and the rolling element 153 can limit the valve stem 14 from rotating.

[0036] Please refer to Figure 2 , in this embodiment, the transmission shaft 132 is connected to the gear box 12 through a transmission bearing 133. The transmission bearing 133 is used to support the transmission shaft 132, reduce the friction coefficient during the movement of the transmission shaft 132, and ensure the rotary accuracy of the transmission shaft 132.

[0037] A first linear bearing 121 is fixedly connected to the lower part of the gear box 12. The first linear bearing 121 is sleeved on the lower end of the valve stem 14 and is in sliding connection with the valve stem 14. The first linear bearing 121 is used to fix the lifting path of the valve stem 14, prevent the valve stem 14 from being displaced, and the floating valve core 142 has a higher repeat positioning accuracy with the liquid outlet 161, and the sealing performance of the floating valve core 142 is better.

[0038] Please refer to Figure 5 , a second linear bearing 162 is fixedly arranged on the sealing joint 16. The second linear bearing 162 and the first linear bearing 121 are arranged vertically. The second linear bearing 162 is sleeved on the outer wall of the valve stem 14 and is in sliding connection with the valve stem 14. The second linear bearing 162 can limit the valve stem 14 near the sealing joint 16, and further ensure the lifting accuracy of the valve stem 14.

[0039] A connection hole 163 is also arranged on the sealing joint 16. The valve stem 14 passes through the connection hole 163. A sealing component 164 is arranged near the connection hole 163 of the valve stem 14. The sealing component 164 includes a sealing screw 166, a sealing nut 167 and two oil seals 165. The sealing screw 166 is sleeved on the outer wall of the second linear bearing 162, and the head of the sealing screw 166 abuts against the outer end of the connection hole 163. The sealing nut 167 is connected to the tail of the sealing screw 166. The two oil seals 165 are respectively located at both ends of the second linear bearing 162, and the two oil seals 165 are respectively in sealing connection with the head and the tail of the sealing screw 166. The sealing component 164 is used to ensure the sealing performance of the sealing joint 16.

[0040] In this embodiment, a support seat 122 is also arranged between the sealing joint 16 and the gear box 12 for providing support to the sealing joint 16.

[0041] Inside the sealed joint 16, there are a connecting ring 168 and a columnar sealing plug 169. A sealing ring 170 is arranged between the connecting ring 168 and the sealing plug 169, so that the sealing plug 169 is hermetically connected to the connecting ring 168. An out - liquid channel 171 is arranged on the sealing plug 169. The out - liquid channel 171 penetrates through both ends of the sealing plug 169. The out - liquid channel 171 communicates with the hollow part of the connecting ring 168. The outer - side port of the out - liquid channel 171 is the out - liquid port 161. The setting of the sealing plug 169 enhances the sealing performance of the sealed joint 16 near the floating valve core 142.

[0042] In this embodiment, a cup - body clamp 172 is arranged near the out - liquid port 161 of the sealed joint 16. The cup - body clamp 172 is used to connect with the reflux pipeline and the coating pipeline to ensure the sealing performance when the two are connected to the sealed joint 16.

[0043] The floating valve core 142 is conical, and its cross - sectional area gradually becomes smaller along the direction from the outside to the inside of the out - liquid channel 171, which is convenient for the floating valve core 142 to be inserted into the out - liquid port 161. When the floating valve core 142 contacts the sealing plug 169, the sealing performance between the two is better.

[0044] Please refer to Figure 1 , the input pipe 2 includes two first input pipes 21 and a second input pipe 22. Both of the two first input pipes 21 are connected to one of the sealed joints 16. One end of the second input pipe 22 is connected to the other sealed joint 16, and the other end of the second input pipe 22 is connected to one of the first input pipes 21 through a pipe - body clamp 23. The pipe - body clamp 23 can ensure that the first input pipe 21 and the second input pipe 22 are tightly connected and effectively prevent water leakage at the connection.

[0045] The second embodiment of the present utility model provides a gear intermittent valve. Except for the guiding assembly 3, other components are the same as those of the gear intermittent valve provided in the above - mentioned first embodiment, and will not be described in detail here. Please refer to Figure 6 , in this embodiment, the guiding assembly 3 includes a guiding gear 31 and a guiding shaft 32 fixedly penetrating through the guiding gear 31. Both ends of the guiding shaft 32 are rotatably connected to the gear box body 12, and the guiding shaft 32 is arranged side - by - side with the transmission shaft 132. There are two racks 141. The valve rod 14 is located between the lifting gear 131 and the guiding gear, and the two racks 141 are respectively meshed with the lifting gear 131 and the guiding gear. Since the guiding gear 31 and the valve rod 14 are meshed through the rack 141, it is not easy for them to be misaligned. The guiding gear 31 can limit the rotation of the valve rod 14 and is beneficial to preventing the valve rod 14 from being deflected.

[0046] The transmission assembly 13 further includes a transmission gear 134, the transmission shaft 132 passes through the transmission gear 134, the guiding assembly 3 further includes a driven gear 33, the guiding shaft 32 passes through the driven gear 33, and the transmission gear 134 meshes with the driven gear 33. When the motor 111 drives the transmission shaft 132 to rotate, the transmission gear 134 rotates accordingly. Since the transmission gear 134 meshes with the driven gear 33, the driven gear 33 rotates, driving the guiding shaft 32 to rotate, and the guiding gear 31 rotates accordingly, so as to lift and lower the valve stem 14 synchronously with the lifting gear 131 and the guiding gear 31, enabling both sides of the valve stem 14 to be stressed, ensuring the centering of the valve stem 14 during movement, and making the movement of the valve stem 14 more consistent.

[0047] In this embodiment, the guiding shaft 32 is connected to the gear box 12 through a guiding bearing (not shown in the figure), and the guiding bearing is used to support the guiding shaft 32, reduce the friction coefficient during the movement of the guiding shaft 32, and ensure the rotational accuracy of the guiding shaft 32.

[0048] The above is a specific description of the preferred embodiment of the present invention, but the present invention is not limited to the described embodiment. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A gear intermittent valve, characterized in that: It includes an input pipe and two driving mechanisms, wherein the input pipe is connected to both of the driving mechanisms and is used to transport the slurry to the two driving mechanisms; the driving mechanism includes: A drive assembly, the drive assembly comprising a motor and a coupling; A gear housing, wherein the drive assembly is located on one side of the gear housing; A transmission assembly, the transmission assembly is located inside the gear box, the transmission assembly includes a jacking gear and a transmission shaft fixedly arranged through the center hole of the jacking gear, the transmission shaft is horizontally arranged and connected to the rotating shaft of the motor through the coupling, and the transmission shaft is rotatably connected to the gear box; A valve stem, the valve stem is vertically arranged, a vertical rack is fixedly arranged on the side wall of the valve stem, and the rack is meshed with the jacking gear; A guide assembly, wherein the guide assembly is located in the gear box, the valve stem is connected between the lifting gear and the guide assembly, and the guide assembly is used to guide the valve stem to move in a vertical direction to limit the rotation of the valve stem so that the valve stem remains vertical; A sealing joint, the sealing joint is connected to the input pipe, the sealing joint is provided with a liquid outlet, a floating valve core is provided on the valve stem, and the floating valve core is located at the liquid outlet and is used to open or close the liquid outlet.

2. The gear intermittent valve according to claim 1, characterized in that: The guide assembly includes a guide mounting plate, a pin shaft and a rolling body. The guide mounting plate is vertically arranged and opposite to the valve stem. The guide mounting plate is provided with two opposite connecting parts on the side facing the valve stem. The pin shaft is horizontally connected between the two connecting parts. The pin shaft passes through the rolling body, and the rolling body is rotatably connected to the pin shaft, and the rolling body is rollingly connected to the valve stem.

3. The gear intermittent valve according to claim 1, characterized in that: The guide assembly includes a guide gear and a guide shaft fixedly inserted through the guide gear, both ends of the guide shaft are rotatably connected to the gear box, and the guide shaft is arranged side by side with the transmission shaft; The racks are provided with two, the valve stem is located between the lifting gear and the guide gear, and the two racks are respectively meshed with the lifting gear and the guide gear.

4. The gear intermittent valve according to claim 3, characterized in that: The transmission assembly further includes a transmission gear, the transmission shaft is passed through the transmission gear, and the guide assembly further includes a driven gear, the guide shaft is passed through the driven gear, and the transmission gear is meshed with the driven gear.

5. The gear intermittent valve according to claim 1, characterized in that: A first linear bearing is fixedly connected to the lower side of the gear box body. The first linear bearing is sleeved on the lower end of the valve stem and is slidably connected to the valve stem.

6. The gear intermittent valve according to claim 5, characterized in that: A second linear bearing is fixedly arranged on the sealing joint. The second linear bearing is vertically arranged with the first linear bearing. The second linear bearing is sleeved on the outer wall of the valve stem and is slidably connected to the valve stem.

7. The gear intermittent valve according to claim 6, characterized in that: The sealing joint is also provided with a connecting hole, the valve stem is penetrated through the connecting hole, a sealing assembly is provided on the valve stem near the connecting hole, the sealing assembly includes a sealing screw, a sealing nut and two oil seals, the sealing screw is sleeved on the outer wall of the second linear bearing, and the head of the sealing screw abuts against the outer end of the connecting hole, the sealing nut is connected to the tail of the sealing screw, the two oil seals are respectively located at the two ends of the second linear bearing, and the two oil seals are respectively sealed and connected to the head and tail of the sealing screw.

8. The gear intermittent valve according to claim 1, characterized in that: A connecting ring and a columnar sealing plug are provided inside the sealing joint, a sealing ring is provided between the connecting ring and the sealing plug, a liquid outlet channel is provided on the sealing plug, the liquid outlet channel runs through both ends of the sealing plug, the liquid outlet channel is connected with the hollow part of the connecting ring, and the outward side port of the liquid outlet channel is the liquid outlet.

9. The gear intermittent valve according to claim 8, characterized in that: The floating valve core is conical, and its cross-sectional area gradually decreases from the outside to the inside of the liquid outlet channel.

10. The gear intermittent valve according to claim 1, characterized in that: The input pipe includes two first input pipes and a second input pipe, the two first input pipes are connected to one of the sealing joints, one end of the second input pipe is connected to the other sealing joint, and the other end of the second input pipe is connected to one of the first input pipes through a pipe body clamp.

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